Answer:
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Explanation:
A scientist is studying PCBs in tertiary consumers. She wants to determine if PCBs can be found in tertiary consumers even though these compounds were banned in the United States in the 1970s. Which of the following best identifies a testable hypothesis for the study?
a. PCBs are highly soluble in water, sok is unlikely that the compounds will be found in the liver or kidneys of tertiary consumers because the compounds have been banned
b. PCBs are persistent organk compounds that are fat-soluble, so they should be found in the fatty tissues of tertiary consumers even though the compounds have been banned for decades.
c. PCBs have synergistic effects with other toxins in the environment and are broken down in water and soll, so most tertiary consumers are not directly exposed to them
d. PCBs are acutely toxic to most forms of ute and quickly kill most organisms upon exposure therefore, tertiary consumers today would be expected to have high levels of the compound in the tissues
Answer: b. PCBs are persistent organic compounds that are fat-soluble, so they should be found in the fatty tissues of tertiary consumers even though the compounds have been banned for decades.
Explanation:
A hypothesis is a statement based on the research topic that can either be disproved or proven by the findings of the research. In this instance therefore, a proper hypothesis would be one that talks about whether or not PCBs would be found in tertiary consumers even though they have been banned.
The hypothesis usually includes the reason for the inference being made which will be tested as well by the research and these have to be logical. Based on these descriptions, the best answer is option b.
PCBs are persistent organic compounds that are fat-soluble, so they should be found in the fatty tissues of tertiary consumers even though the compounds have been banned for decades identifies a testable hypothesis for the study.
What is a testable hypothesis?The hypothesis is a statement that could be proved true or false depending on the data analysis and scientific methodologies used in research.
Therefore, in the above case, a valid hypothesis would be to evaluate whether PCBs would be found in tertiary consumers even though they have been banned or not.
Learn more about hypothesis testing here:
https://brainly.com/question/2926569
India's caste system make sure that people
Answer:
hi
Explanation:
hi
Which of the following are ways that deserts form? (Choose all that apply.)
- weathering of rocks
- equatorial winds
- rain shadow
- cold ocean currents
can someone do this crossword puzzle.
Answer: i mean i dont know how to??
Explanation:
What is a payroll tax
Answer: Payroll taxes are taxes imposed on employers or employees, and are usually calculated as a percentage of the salaries that employers pay their staff. Payroll taxes generally fall into two categories: deductions from an employee's wages, and taxes paid by the employer based on the employee's wages.
Explanation:
the process of boiling oil at different temperatures is called
A. fracturing
B. convection
C. burn off
D. refining
Answer:
A.Fracturing
Explanation:
trust me
hehehe good luck
NEED NOWW
Is it possible to classify the state of Ohio as a nation-state? A. No. A government run by elected officials is not considered a nation-state. B. No. Ohio is still subject to the laws of the U.S. federal government. C. Yes. Ohio has elected officials and a state government. D. Yes. Only laws passed by the state government apply in Ohio.
Answer:
Most likely c
Explanation:
It sound more professional
I know no one will answer this question correctly but if someone does I just wanna give you a big thanks! Please answer the question with a short paragraph
My question: How does knowing that all the oceans are joined together help you understand the impact of a river drying up?
Answer: I don't the answer to this but I can give you tips, maybe if you look why the river is drying up and click on a couple links and then use your own words to explain.
The graph shows three different projections of human population growth.
If you assume that the high projection is correct, what is one way the larger human population can ensure it has enough food?
A. By finding more efficient ways of growing crops B. By learning to eat a lot less food C. By focusing more on ideas and services D. by returning hunting and gathering
Answer:
C. By focusing more on ideas and services
Explanation:
hope it helps
#CarryOnLearning
characteristics of soil
Answer:
THE ANSWER IS IN THE PICTUREExplanation:
HOPE IT HELP'Sシ︎In which of the following types of bonding do atoms share one or more electrons?
Answer:
In covalent bonding
explanation:
Answer:
atoms share one or more electrons in covalent Bond
PLZ HELP IT SHOULD BEE EASY
The man who served as both the last judge and the first prophet of Israel was:
David
Eli
Samson
Samuel
Answer:
Samuel
Explanation:
He was the man who served as both the judge and first prophet, he is recognized as a hero in Israel.
Samuel
I looked it up
4
What is the radius of a circle with a circumference of 2 in?
O 2 in
O 1 in
O 3 in
04 in
Answer:0.32
Explanation: =
C2π=22π≈0.31831in
What ocean current is found at the following coordinates: 58°N, 170°W
Answer:
Pacific ocean
Explanation:
Which characteristic is common to the 3 major religions practiced in the Middle East?
Answer:
goog le
Explanation:
search on there
What shapes the coastlines?
Answer: Waves
Explanation:
Coastlines are formed due to the continuous battering of the coast by waves. These waves cause soil erosion when they take some coastline material back to the water as they recede. They also deposit some material on the coast when they make contact.
This causes the coastlines to take different shapes as the process goes on and on. Some coasts will be harder to shape however when the waves will be unable to erode the coast so easily because those coasts are made of harder material like rocks. That's why rocky coastlines stay more of less the same for a long period of time.
The graph below shows natural and human impacts on climate.
assertion do the data support?
A. Recent elevated temperatures are caused by human activities.
B. Human activities and natural processes have equal impacts.
C. There is no reason to believe humans are causing global warming.
D. Natural processes are evidence against global warming.
The correct answer is A. Recent high temperatures are caused by human activities.
Explanation
The graph shows the agents of climate change. In the first row are the natural processes, in the second row are human activities concerning thermal interruption (W / m²), and in the third row is the accumulated total of human activities that reach close to 2 W / m², while natural processes are close to 0.3 W / m². Therefore, it is possible to affirm that the increase in temperature is mainly caused by human activity, so the correct answer is A. A. Recent high temperatures are caused by human activities.
Anyone know this question
Answer: They are both considered a C Theocracy because they rule in the name of a God.
Describe at least four examples of how the atmosphere influences the oceans. Be certain to explicitly describe mechanisms of the atmospheric phenomena you chose. Then, explain how the ocean responds by influencing the atmosphere and the earth system as a whole.
Answer:
presence of green house gases
Change in Temperature of the atmosphere
Change in seasons
presence of Plants
Explanation:
four ( 4 ) ways in which the atmosphere influences the oceans
Presence of green house gasesThe green house gases affects the atmospheric layers of the atmosphere which leads to an increase amount of ultraviolent rays ( sunrays ) heating up the oceans. The heating up of the Oceans will lead to increase in heat storage by the water bodies and also increase the evaporation of water vapors into the atmosphere
Change in Temperature of the seasonsThe various changes in the temperature is caused by Human and natural activities like wild bush fires and when the atmosphere is heated up the Oceans are cooler and they send across cool air to the earth system to help balance up the change in Temperature
Change in seasonsThe change in seasons affects the strength of the ocean currents
Presence of plants in the earth systemPlants produces Oxygen while making use of Carbon dioxide . the oxygen produced by plants are collected by the oceans and stored for use by animals
How did isolation affect culture in Oceania?
O A. Many small Pacific islands rely on the United States for military
support.
B. Indonesia has the highest Muslim population in the world.
C. Christianity is practiced throughout New Zealand.
D. Aboriginal cultures have no influences outside Australia.
SUBMIT
Answer:
The correct answer is - D. Aboriginal cultures have no influence outside Australia.
Explanation:
Oceania is a geographical region of the earth that extends from the Hawaiian Islands to New Zealand. Most of this region are isolated islands that are completely separated or cut off from the world until the late 1900s or later than that.
These regions caused various effects on these isolated cultured found on these separated islands such as Aboriginal cultures to have no influence outside Australia and Languages in Tasmania are unrelated to those not from the island.
Answer:
Alternate Answer:
Aborigines speak a language unrelated to any outside Australia.
Explanation:
The cultures of western and central Africa have unique musical and dancing traditions. In a short paragraph, explain the role that masks play in the dance of western and central Africa.
I’m having trouble with this question
agriculture is the answer
Answer:
industrial?
Explanation:
(JUST GIVING THE ANSWER)
Read the example of a note card used to organize research findings.
Which detail indicates that the source the student used is reliable?
The important points include numbers.
There is no single author.
The title includes the word “facts.”
The website has a .gov domain name.
ITS D
Answer: The website has a .gov domain name.
Explanation:
You are quite correct that D is the answer. When a website has the domain ".gov", it means that it is a government website which makes it credible because the information contained on government websites are official information which means that they have been vetted and approved as the true version of things.
While of course this means that the information contained can be used to manipulate people, it is also the most accurate source of information because the government has considerably more resources than private institutions to find out information on various topics.
Answer:
yeah your rights thanks.
Explanation:
What European country or countries cleaned and settled land in the New World mark all that apply
A. Spain
B. France
C. Germany
D. Portugal
Answer:
A
Explanation: